Folder



H. A. W. WOOD Aug. 23, 1927.

FOLDER Filed June 25, 1926 INVENTOR ATTORNEY,

Patented Aug. 23, 1927.

UNITED STATES PATENT OFFIOE.

HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MA- CHINEBY CORPORATION, OF NEW YORK, N. Y.,

A CORPORATION OF VIRGINIA.

FOLDER.

Application filed June 25, 1926, Serial No. 118,451, and in Canada May 26, 1924.

This is a continuation in part of my application for patent, Serial No. 580.437. filed August 8, 1922 and a continuation in part of my divisional application Serial No.

3,510, filed January 19, 1925.

The principal objects of this invention are to provide for operating a folder at a high rate of speed and to provide improvements in the. nipping roll arrangement to divide and reduce the strain on the paper so as to prevent the failure of these rolls to pull the paper snugly over the former when running at high speed and avoid the tearing of the margins.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side view of a newspaper folding machine constructed according to this invention. partly diagrammatic to show the path of the paper;

Fig. 2 is a diagrammatic view showing the drive for the nipping rolls: and

Fig. 3 is a side view showing the spring pressed brackets for the nipping rolls.

I find that when newspaper folding devices are run at great speed an ordinary set of nipping rolls running on the margins does not pull the paper snugly over the former. If they are set tight enough on the paper to accomplish this object they bring too great a strain on one of the newspaper streams and it cracks or breaks through at that point. To overcome this difliculty I provide for dividing up this strain between two or more sets of nipping rolls running at a surface speed faster than that of the web.

I have shown the invention as applied to a folding mechanism having the ordinary features well known in this art and the improvements above mentioned added to them. This machine is shown as comprising a former 10 operating with the usual forming or leading-in rolls 11, and the usual pair of nipping rolls 12 engaging the margins which I call the primary nipping rolls. On account of the difficulties above mentioned and for the purpose of dividing up the strain I do not depend upon these two pairs of nipping rolls. But I provide in addition a secondary set of nipping rolls 13 spaced from the first set and operating in the same way on the margins.

The rolls of both sets are driven from the folder by a shaft 21 and bevel gears 22 so as purpose of )ulling up the sheet and With this device it is not necessary to adjust the rolls 12 tight enough to cause them to pull the paper snugly over tlK former 10 at all times. but they can be adjusted more loosely because they are assisted by the second rolls 13 which also are adjusted loosely. The work is divided between the plurality of setsand the strain at each point is divided and lessened. This practically eliminates the cracking or breaking of the paper at the margins by the nipping rolls.

I have'shown one pair of the upper set of nipping rolls 12 mounted in fixed position and the other on a shaft mounted on pivoted brackets 14. These brackets are pressed by adjustable springs 15 toward the other member of the couple and this adjustment may be made by a worm and screw 16 or in any other desired way. One pair of the rolls 13 of the other set is also mounted intixed position on the frame of the machine and the other on a bracket 17 which is pivoted and adjusted by springs 15 and screws 16 as in the other case.

'The web W is led as usual from the nipping rolls to the folding cylinder 18 and cutting and collecting cylinder 19 which cut it up into sheets and fold it in the usual way and tuck it between the folding rolls 20.

These improvements are designed to facilitate the speeding up of a folding device of the character indicated in the drawings, and to solve certain problems which arise when the speed of the folder increases materially beyond the highest rates heretofore considered practical and they cooperate to that end.

Although I have illustrated and described only a single form of the invention and shown it as applied to one type of folder I am aware of the fact that modifications can be made therein by an person skilled in the art without departing fromthe scope of the invention as expressed in the claims.

Therefore. I do not wish to be limited in these respects. but what I do claim is:--

1. In a folding machine, the combination with a former and leadingin rolls, of means for nipping the web and pulling it through the rolls from a plurality of points along the web for the purpose of dividing the strain, said means at each of said points comprising two rolls rotatably mounted one roll being yieldingly held in contact with the other.

2. In a foldin machine, the combination with forming and leading-in rolls, of means for nipping the web and pulling it through the rolls from a plurality of points along the web for the purpose of dividing the strain, said means at each of said points comprising a roll rotatably mounted on a stationary shaft and another roll yieldingly held in contact therewith and mounted on a shaft carried by a pivoted bracket.

3. In a folding. machine, the combination with the forming or leading-in rolls, and a pair of nipping rolls' for engaging the folded web, oneof said rolls being yieldingly and rotatably mounted in contact with the other and drawing the web through the forming rolls, of a secondary means for engaging said web at another point and assisting in drawing it through the folding rolls.

4. In a folding machine, the combination with the former and a rotary folding device, of two pairs of rolls located between them for constantly engaging the web at a plurality of points along its length and pulling it through the former and advancing it to the folder, one roll of each pair being yieldingly mounted.

5. In a folding machine, the combination with the forming or leading-in rolls and a. pair of nipping rolls for engaging the folded web, one of said rolls being rotatably mounted on a shaft and the other yieldingly and rotatably mounted in contact therewith and drawing'the web through the forming rolls, of a secondary means for engaging said web at another point and assisting in drawing it through the folding rolls, said secondary means comprising a pair of rolls, one being yieldingly mounted on a pivoted bracket.

6. In a folding machine, the combination with a former and leading-in rolls, of means for nipping the web and pulling it through the rolls from a plurality of points along the web for the purpose of dividing the strain and means for running the nipping means at a surface speed greater than web speed for the purpose of dividing the strain.

7. In a folding machine, the combination with the former and a rotary folder for re ceiving the web therefrom, of a. primary pair of nipping rolls between the former and folder for nipping and feeding the web, a secondary pair of nipping rolls also located between the former and folder at a distance from the primary nipping rolls for engaging the web and assisting in pulling it through the former and advancing it to the folder and means for rotating the nipping rolls at a surface speed greater than that of the web.

8. In a folding machine, the combination with the former and a rotary folder for receiving the web therefrom, of a primary set of nipping rolls between the former and folder for nipping and feeding the web at its margins, a secondary set of nipping rolls also located between the former and folder at a distance from the primary nipping rolls for engaging the web at its margins and assisting in pulling it through the former and advanclng it to the folder, both sets of rollers being adjustable to nip the paper at the margins with less pressure than would be necessary with a single set.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

Therefore. I do not wish to be limited in these respects. but what I do claim is 1. In a. folding machine, the combination with a former and leading-in rolls, of means for nip ing the web and pulling it through the rol from a plurality of points along the web for the purpose of dividing the strain, said means at each of said points comprising two rolls rotatably mounted one roll being yieldingly held in contact with the other.

2. In a foldin machine, the combination with forming an leading-in rolls, of means for nipping the web and pulling it through the rolls from a plurality of points along the web for the purpose of dividing the strain, said means at each of said points comprising a roll rotatably mounted on a stationary shaft and another roll yieldingly held in contact therewith and mounted on a shaft carried by a pivoted bracket.

3. In a folding. machine, the combination with the forming or leading-in rolls, and a pair of nipping rolls for engaging the folded web, one-of said rolls being yieldingly and rotatably mounted in contact with the other and drawing the web through the forming rolls, of a secondary means for engaging said web at another point and assisting in drawing it through the folding rolls.

4. In a folding machine, the combination with the former and a rotary folding device, of two pairs of rolls located between them for constantly engaging the web at a plurality of points along its length and pulling it through the former and advancing it to the folder, one roll of each pair being yieldingly mounted.

5. In a folding machine, the combination with the forming or leading-in rolls and a pair of nippin rolls for engaging the folded web, one of sai rolls being rotatabl mounted on a shaft and the other yielding y and rotatably mounted in contact therewith and drawing'the web through the forming rolls, of a secondary means for engaging said web at another point and assisting in drawing it through the folding rolls, said secondary means comprising a pair of rolls, one being yieldingly mounted on a pivoted bracket.

6. In a folding machine, the combination with a former and leading-in rolls, of means for nipping the web and pulling it through the rolls from a plurality of points along the web for the purpose of dividing the strain and means for running the nipping means at a surface speed greater than web speed for the purpose of dividing the straln.

7. In a folding machine, the combination with the former and a rotary folder for receiving the web therefrom, of a primary pair of nipping rolls between the former and folder for nipping and feeding the web, a secondary pair of nippin rolls also located between the former and older at a distance 79 from the primary nipping rolls for engaging the web and assisting in pulling it through the former and advancing it to the folder and means for rotating the nipping rolls at a surface speed greater than that of the web.

8. In a folding machine, the combination with the former and a rotary folder for receiving the web therefrom, of a primary set of nipping rolls between the former and 80 folder for nipping and feeding the web at its margins, a secondary set of nipping rolls also located between the former and folder at a distance from the primary nipping rolls for engaging the web at its margins and assisting in pulling it through the former and advancing it to the folder, both sets of rollers being adjustable to nip the paper at the margins with less pressure than would be necessary with a single set.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

CERTIFICATE OF CORRECTION.

mm No. 1,640.017.

Granted August 23, 1927, to

HENRY A. WISE WOOD.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring'corrcction as follows: Page 2, lines 62 and 63, claim 6, strike out the words "for the purpose of dividing the strain"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 18th day of October, A. D. 1927.

Sell.

M. J. Moore, Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,640,017. Granted August 23, 1927, to

HENRY A. WISE WOOD.

It is hereby certified that error' appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, lines 62 and 63, claim 6, strike out the words "for the purpose of dividing the strain"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and aeaIed thia 18th day at October, A. 1927.

M. J. Moore, Seal. Acting Commiaaioner of Patent; 

